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T. J. LORDS ET AL ROOFING MACHINE Filed Nov. 5. 1920 A? 5 Sheets-Sheet 1@c& 16,1923. v 11,71,43

T. J. LORDS ET AL ROOFING MACHINE Fi led Nov. 5. 1920 5 Sheets-Sheet 2777a 47 620 JZOZQT? @cEn 9 T, J. LORDS ET AL T 1200mm momma Filed Nov.5, 1920 5 Sheets-Sheet 3 e215 J [03625 fizzy/dd /.[/z/7W/2 1% 7% Maw T.J. LORDS ET AL ROOFING MACHINE Filed Nov. 5, 1920 5 Sheets-=$heet 4fiigl Oct. 16 1923.

1'. J. LORDS ET AL noofime mourns:

Filed Nov. 5, 1920 5 Sheets-Sheet 5 Patented Oct. 16, 1923.

- UNITED STATES PATENT OFFICE.

THADDEU S J. LORDS AND GARFIELD P. LENNARTZ, OF CHICAGO, ILLINO IS,ASSIGNORS TO SEARS, ROEBUCK AND 00., OF CH YORK.

ICAGO, ILLINOIS, A CORPORATION OF NEW ROOFING MACHINE.

Application filed November To all whom it may concern:

Be it known that we, THADDEUS J. Loans and GARFIELD P. LENNARTZ,citizens of the United States, residing at Chicago, in the county ofCook and State of Illinois, have invented certain new and usefulImprovements in Roofing Machines, of which the following is aspecification.

Our invention relates to the manufacture of protective material forcovering the roofs and walls of buildings and more specifically to animproved machine for manufacturing roofing. Such roofing is ordinarilycovered with a surfacing of ground slate or other weather resistingmaterial, and roofing having a pattern formed there on, so as to looklike shingles or tile for instance, presentsa much more attractive ap-'pearance than roofing having a uniform.

surface.

The main object of our invention is to provide a machine for producingsuch roofing quickly and economically.

Another object is to produce a pattern by the interruption of a. streamof material in such a way as to secure clean outlines. We accomplishthis chiefly by dropping the material through as short a distance aspossible and by employing an interrupting member of special shape.

Another. object is to prevent blurring of the outlines during theoperation of pressing the surfacing material into place.

Another objectis to provide means to avoid fouling of the parts used inapplying the ground surfacing material when starting the machine.

Another object is to dispose of the ground material-interrupted byreturning it to the 4 original supply of ground material.

nother object is to provide an arrangement of parts capable of operatingin the presence 'of considerable quantities of grit Without jamming orexcessive wear.

Further objects and advantages of our invention will become apparent asthe description proceeds.

n the accompanying drawings, Figure 1 is a diagrammatic view of anentire roofing machine of which our improved surfacing device forms apart. Fig. 2 is an end view of the device itself and Fig. 3 is alongitudinal section on the line 3-3 of Fig. 2. Fig.

4 is a transverse section of the device. Fig.

" 5 is an end View of the end opposite that 5, 1920. Serial No. 521,911.

shown in Fig. 2 and Fig. 6 is a detail of l the raising and loweringmeans for the paper support. Fig. 7 is a fragmentary view of part of thestencil as it would appear if developed or rolled out flat, and Fig. 8is a detail section on the line 8-8 of Fig'. 7. Fig. 9 is a fragmentaryview of the product manufactured in our machine.

In the embodiment of our invention select ed for illustration, the paperP may be drawn from a suitable source of supply such as a roll 10 and isfirst passed through take up rollers 12. The upper rollers are movablymounted and may be lowered at a constant rate to permit the rest of themachine to receive paper for a short time without taking paper fromtheroll 10. This makes it possible when the end of a roll is reached forthe workmen to fasten the end of the old roll to the end of a new rollwithout stopping the entire machine. After passing over rollers 12 thepaper passes over other rollers 14 into and out of a bath of tar,asphaltum or other suitable substance with which it is more or lessthoroughly impregnated. From this bath it passes under a pipe 16 whichdeposits material on the'moving strip and between a pair 'ofstationaryrolls 17 by means of which the material is spread out into asmooth, uniform coating over the surface of the paper. Excess. coatingmaterial may fall off the edges of the strip of paper and be collectedin a suitable receptable, not shown. The upper roller 17 is preferablymade vertically adjustable for controlling the thickness of the coatingspread on the pa er. The foregoing elements being old an well known inthe art and constituting no part of our present invention, more detaileddisclosure of the same is deemed un necessary. 1

Various combinations or sets of devices for applying ground material orsurfacing to one or both sides of the roofing ma act n the same after itpasses between rol s 17. We haveshown two such arrangements in Fig. 1,the one shown in full lines comprising means for passing the paper undera feeding device 18, around a large roller 20 which presses most of thesurfacing deposited by the device 18 into the coating applied by pipe16, another roller 19 employed merely for convenience in reversing thedirection of the strip, and a final pair of rollers 21 which press thematerial carsupport 38 may be tied by the strip a second time after thetemperature of the strip has been considerably reduced from thatprevailing adjacent the roller 20. A scraper blade 23 is preferablyprovided to direct surfacing in excess of what will adhere to the stripoff the desoending side of roller 20 into a receiving chute 25 to conveyit back to the main supply. A hopper 27 is ordinarily positioned so asto oat the reverse side of the paper with ground material, usually finepowdered mica. The same plant may be employed to produce aper coatedwith fine owdered mica on both sides by passin t e paper along the pathshown in dotte lines to receive coatings of suitable material on bothsides from other hoppers 27.

The device 18 for feeding the surfacing material onto the strip in sucha way as to produce a pattern is illustrated more in detail in Figs. 2to 6. A pair of spaced standards 24 support a stationary shaft 28 whichin turn supports two spiders 30. A cylindrical stencil 34 is rotatablysupported at its ends on the spiders 30 by peripheral engagement of thespiders with the element and by engagement of the faces of the s iderswith guide rings 35 and with combined guide rings and internal gears 36.The paper is carried past beneath the cylinder almost in contact with itover a support 38.

When the machine is temporarily stopped for any reason, the mass ofmaterial lying in front of rolls 17. will cool below the propertemperature and when the machine is subsequently restarted the coldmaterial will be forced throu h the rolls in such a way as to roducedumps in the coating which woul be apt to make contact with the cylinder34, contaminatin it and interfering with the operation 0 the machine. InFigs. 5 and 6, we have illustrated means for temporarily withdrawing thesupport 38 from operative position to prevent such contamination of thecylinder. The support 38 is supported at its ends by vertical screws 40entering tubular members 37 with respect to which their height may beadjusted by nuts 42. Each tubular member carries a laterally extendingportion 39 slidably mounted in a rocking frame 41 pivoted at 43 to thesupporting framework. For adjusting the horlzontal alinement of thesupport to position it correctly under the cylinder 34 we provide ascrew 45 threaded through the portion 39 and rotatable by means of ahand wheel 47. A transverse shaft 49 journaled in the supportingframework carries eccentrics 51 abutting lugs 53 on the pivoted frames41, and a handle 55 fastened at one end of the same. By rotating thehandle the ivoted frames 41 and ropped downwardly a suficient distanceto allow the excess material carried by the strip to pass by thecylinder 34 without touching it after which the parts may be thrown backinto the position shown in Figs. 5 and 6.

Within the stencil 34 is a hopper comprising inclined plates 44 and 46suitably reinforced by angle members 48 and cooperating with a feedroller '50 to hold the ground material with which the paper is to besurfaced and deliver it at a uniform rate. The supply of material in thehopper may be replenished through one or more chutes 31, and a brush 33is preferably provided to brush off any material deposited on top of thestencil by the chutes. The rate of discharge may be oonvenientlyadjusted by means of a gate 52 in the nature of a slidable plate theposition of which may be controlled by rotating a shaft 54 carryingpinions 56 meshing with racks 58 mounted on the plate 52. The end of theshaft may carry a suitable adjusting lever 57 (see Fig. 5) which, in theposition illustrated in the drawings cuts d the discharge. It may bemoved t the right; from the position shown in Fig. 5 into variouspositions indicated by markings on a suitable scale 59 to secure variousrates of discharge. The material discharged is carried out b the rollerand dropped in front of a vertical plate 62 upon an inclined plate 60.The edges of the plates 60 and 62 define a slot spaced above the movingstrip only by the clearance necessary to permit movement of thecylinder, and the material striking the plate 60 slides down it into theslot and is thus deposited upon the strip.

It Will be seen that if the flow of material between the lates to themoving paper were entirely uno structed, the paper woul receive auniform layer of ground material over its' entire surface.

We have illustrated means for interrupting the flow of material toproduce a pattern on the paper. For this purpose the central portion ofthe cylinder 34 is cut to form a stencil havin portions 64 extendingparallel to the axis 0 the cylinder and other portions 66 extendingcircumferentially around it. The cylinder is driven at a surface speedidentical with that of the paper P. Each part of the stencil willtherefore prevent the deposit of surfacing on the area which it coversas it passes through the stream of material, producing an uncoated area.To secure clean outlines for these areas portions 64 have their leadingand following edges formed at an angle as clean ly shown in Figs. 4 and8, which angle should obviously be the antitangent of the downwardvelocity of the ground material divided by the eripheral velocity of thecylinder. Partic es passing the upper edge of the leading face willtherefore not make contact with any part of the stencil but fall freelythrough the short distance separating them from t e pa r and come torest.

Totake care the material interrupted by the stencil we rovide a shield70 extending around a tri c more than 90, do of the periphery of thecylinder beginning just in front of the stream of material where itstrikes the paper. The shield ma%vbe supv 28 and bearings 73 supported'by shaft 78,-

ported in any suitable manner. e have illustrated bearings 71 supportedby shaft formed as integral POlt-IOIIS of the end pieces 75 which arealso inte l with the body of the shield. This shie (1 receives anymaterial bounding or falling off the portions 64 which material will bemoved up the shield by the wiping action of thesstencil itself to alevel with the axis where it will ride upon the then horizontal leadingedges of the por tions 64 and be dropped b the tip ing caused by furtherrotation bach into the opper. To. avoid any tendency toward a bindmg orgrinding action of particles of mate rial caught between the stencil andthe shield 70, the shield is preferably constructed of a slightlydifferent radius than the stencil and positioned so that the clearancebetween the shield and the stencil increases very gradually frompractical contact at 72 to a considerable clearanceflat 74 (see .Fig.4).

This practically eliminates binding as well as the grlndmg action andwear on the stencil and shield.

To further. eliminate spattering back of the material being elevated bythe stencil,-

we prefer to provide an inner shield 77 (see Fig. 4) having enoughclearance between it and the stencil to prevent grinding and cooperatingwith the outer shield 70 to define an arcuate passageway extending fromadjacent the bottom of the cylinder u to the edge of the ho per. Thiscomplete y eliminates the possi llity of an'occasional deposit ofparticles falling off portion 64 and rebounding from shield 70 onto themoving e roofing produced by the stencil shown will comprise surfacedareas 65 (see Fig. 9).

separated by dividing lines 67 of paper free from surfacing, to form a.pattern. It will be obvious that an unlimited number ofdesigns may bereadily produced by the use of d fferent stencil cylinders. 1Q

As the strip passes around the roller 20 and 1s tipped into an aproximately vertical POSllZlOB, particles 0 surfacing not yet pressedinto the strip would naturally tend to fall from the edges of thecovered. areas into the adjacent uncovered areas and blur the outlines.of the pattern. To eliminate this. tendency we provide means forapplymga preliminary pressure to the strip before it has been tipped bymovement around of such falling action.

roller 20 to an angle stee enough-to permit n l -we have illustrated aroller 79 pressed inst the lower side of roller 20, prefera ly by a.counterweight such as 81. Rollers 21 and the mechanism receiving thestrip therefrom ordinarily exert a considerable tension on the strip sothat during its entire passage around roller 20 the strip is firmlypressed against the roller, but the use of roller 79 forces the materialinto place sufiicientlly to prevent subsequent blurring of the out mesduring the passa of the strip over the upper portion of t e roller 20.In channg over to use hoppers 27 roller 79 may 0 v1- ously be'shiftedout of the way, or even removed entirel Any suitable power driventransmission may be employed to actuate the parts above described. Wehave illustrated a. gear 76 on the longitudinally extending shaft 78which shaft carries two pinions 80 each meshing with one of the gears 36carried by the cylinder and also with an intermediate trans-.

82 and theintcrnalgears 36 carried by the cylinder. To'prevent the undmaterial from working into the bearings supporting the cylinder wepreferably provide a shield 88 in the nature of a sheet metal ringfastened toeach of the spiders 30 and overlying the guide r' 35. A fiberfiller 90 saturated with lubricant may conveniently beplaced inside theshield to assist in-kcepin" the parts properly lubricated.

while we have illustrated and described in detail the preferredembodiment of our invention, it should be clearly understood that thedisclosure is merely for purposes of illustration and that manymodifications and variations will naturally occur to those skilled inthe art. We aim in the subjoined I spaced standards supporting astationary shaft, stationary circular heads on said shaft, a tubularstencil rotatably su ported by peripheral engagement with sai heads, andmeans for rotating the stencil.

2. In a device of the class described,'stor- I age means for groundmaterial, means for discharging a uniform stream of.material fromstorage, means for periodically inter.- rupting the discharge stream,andconyeys ing means associated with said interrupting 1 means forreturning the material inter rupted to storage.

3. In a device of the classdessiibed, means for moving a strip past agiven point, means for depositing material on the. stri stencil meansmoving adjacent the strip or interrupting the deposit of material, and ashield to prevent the material interrupted from spattering over thestrip.

4. In a device of the class descri, spaced standards supporting astationary shaft, stationary heads supported by the shaft, a. tubularstencil rotatably mounted on said heads, a drive shaft journaled in saidheads, and a gearing connection be-- tween said drive shaft and saidstencil.

5. In a device of the class described, spaced standards supporting astationary shaft, stationary heads on said shaft, a tubular stencilsupported on said stationary heads, a stationary hopper inside saidstencil, a feed roll for delivering material from said hopper, and meansfor rotating said feed roll and stencil.

6. In a. device of the class described, a hopper, and means fordelivering a concentrated stream of material from said hopper in adefinite vertical plane, said means comprising a feed roller, a gatecooperating with said feed roller to permit the roller to carry materialout of the hopper, a vertical guide placed almost in vertical alinementwith the descending periphery of the roller, and an inclined guideopposite said vertical guide for interrupting material leavin the rollerwith a horizontal velocity an directing it back into the desiredvertical plane.

7. In a device of the class described, means for moving a strip past agiven point, means for depositing material on the stri stencil meansmoving adjacent the strip or interrupting a deposit of material, and ashield cooperating with the stencil to convey interrupted material awa8. In a device of the c ass described, means for moving a strip past agiven point, means for depositing material on the stri stencil meansmoving adjacent the strip or interrupting a deposit of material, and ashield cooperating with the stencil to convey interrupted material tothe upper portion of the stencil and there drop it.

9. In a device of the class described, a rota stencil, means for movinga stri past elow said stencil, a support for guitl ing the strip, asecondary support carrying sa1d guidin support, means for quicklyshifting sai secondary support through a .predetermined displacement,and means for adjusting the guiding support on the seconda support.

10. n a device of the class described, means for delivering a stream ofmaterial in a predetermined vertical plane, a stencil, and means formoving said stencil through said stream of material, the leading ed esof said stencil being beveled downwardly and rearwardl at an an ledetermined by the relative ve ocities of and the stencil.

' 11. In a device of the class described,

e falling material means for delivering a stream of material in apredetermined vertical plane, a stencil, and means for moving saidstencil through said stream of material, the leading and trailing edgesof said stencil being beveled downwardly and rearwardly at an angledetermined b the relative velocities of the falling material and thestencil.

12. In a device of the class described, means for depositin plasticmaterial on a moving strip, means or depositing additional material onthe plastic material, said last-mentioned means operating in closeroximity to the strip, means for adjusting the normal spacing of saidlast-mentioned depositing means and the strip, and additional means forremoving the strip tem raril from proximity to said last mentionedepositmg means without disturbing the adjustment of said adjustingmeans.

13. In a. device of the class described, a rotary stencil, storage meansinside said stencil, means for delivering a stream of material from saidstorage means, and means for checking the downward velocity of thematerial delivered just, above the path of movement of the stencil.

14. In a device of the clam described, a rotary stencil, means insidethe stencil just above the path of movement of its lowermost portion fordeliverin a stream of material, and additional feedmg means above saiddelivering means for feeding material to the delivering means, saidfeeding means including means for determining the rate of flow ofmaterial.

15. In a device of the class described, a stencil, storage means formaterial inside said stencil, means above said stencil for droppingmaterial through said stencil to rep enish the supply in said storagemeans, and means engaging said stencil after it passes through saidsupply means for dislodgin material carrie by said stencil.

16. n 'a device of the class described, a. rotary stencil havingperipherally extending ortions and other portions extending para lel tothe a. f rotation, the leading edges of s a ast mentioned portions beingbeveled outwardly and back with respect to the direction of motion.

17. In a device of the class described, means for coating the uppersurface of a horizontally moving stri with granular material, a mainmechanism for pressing the anular material into the strip an simutaneousl inverting the strip, an auxilia mec anism for applying apredetermine amount of pressure to the stri before it has been tipped tosuch an ang e as to displace any of t e granular material. In testimonywhereof we have hereunto set our hands.

THADDEUS J. LOR'DS.-

GARFIELD P. LENNARTZ.

